The invention relates to a service health monitoring method based on power communication network dynamic resource management. According to the method, a communication network resource topology, a device running state and warning information dynamic management are acquired through a cobar, telnet, snmp, ssh and/or tcp/ip interface, then a mapping relationship between services and physical resourcesis built, a service impact factor and a ratio thereof are defined, and the power services are monitored directly through analysis and evaluation of a health algorithm. Through adoption of the method,the running health state of the service can be determined rapidly and accurately, repair, operating and maintaining, and scheduling are more timely according to the service impact level and impact range, the service is ensured to run safely, the power is provided more reliably, so as to guarantee the livelihood of people.